Question 5 correct 875 points out of 875 flag

Question
5

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8.75 points out of 8.75
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Question text
Simplify.
4
-2
Select one:
2
Question
6
Correct
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Simplify the expression. Write your answer with positive exponents only.
( t
3
z)
2
(3 t
-2
z
4
)
-2
Select one:
Question
7

Correct
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Perform the indicated operation and write the answer in scientific notation.
31.5×10
16
4.5×10
6
31.5×10164.5×106
Select one:
10
22
10
22
10
Question
8
Correct
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Question text
Subtract the radical expressions. Assume that all variables represent positive real numbers.
372 y
3
‾‾‾‾‾√−2 y ‾‾√
372y3−2y
Select one:
a.
172 y
3
−2 y ‾‾‾‾‾‾‾‾√
172y3−2y
b.
(18 y −1)2 y ‾‾√
(18y−1)2y
c.
372 y
3
−2 y ‾‾‾‾‾‾‾‾‾√
372y3−2y
d. Cannot be simplified further
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The correct answer is:
(18 y −1)2 y ‾‾√
(18y−1)2y
Question
9

Correct
8.75 points out of 8.75
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Question text
Multiply the radical expressions and simplify your answer.
9‾√⋅8‾√
9 ⋅ 8
Select one: